pymongo: ImportError: No module named pymongo

Question

I successfully installed pymongo using pip3

Aleeshas-MacBook-Air:project 2 aleesha$ sudo pip3 install pymongo
The directory '/Users/aleesha/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/aleesha/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pymongo
  Downloading pymongo-3.4.0-cp35-cp35m-macosx_10_6_intel.whl (294kB)
    100% |████████████████████████████████| 296kB 730kB/s 
Installing collected packages: pymongo
Successfully installed pymongo-3.4.0
Aleeshas-MacBook-Air:project 2 aleesha$

Then I wrote a test script in python which writes to MongoDB. But when I execute it, I get the following error:

Aleeshas-MacBook-Air:project 2 aleesha$ python pythonScript.py 
Traceback (most recent call last):
  File "pythonScript.py", line 5, in <module>
    from pymongo import MongoClient
ImportError: No module named pymongo
Aleeshas-MacBook-Air:project 2 aleesha$

Python Version: Python 3.5.2

This is how the path looks like:

 >>> import sys
    >>> sys.path
    ['', '/Users/aleesha/Documents', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python35.zip', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/plat-darwin', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload', '/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages']
>>> sys.version
'3.5.2 (v3.5.2:4def2a2901a5, Jun 26 2016, 10:47:25) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]'
>>> 

Searched on google. Found this question on stackoverflow: ImportError: No module named 'pymongo' which then points to another page on stackoverflow: failure to import pymongo ubuntu

sudo pip uninstall pymongo ==> Succesfully uninstalled
sudo pip uninstall bson ==> Cannot uninstall requirement bson, not installed
sudo apt-get remove python-bson ==> sudo: apt-get: command not found
sudo apt-get remove python-gridfs    # not sure if it's necessary ==> sudo: apt-get: command not found
sudo pip install pymongo -U ==> successfully installed pymongo

However even after this, I face the same issue. I am not able to import the pymongo module.

EDIT: I was trying few more things to fix the issue. Using IDLE I could import pymongo and easily insert a record into MongoDB.

>>> from pymongo import MongoClient
>>> client = MongoClient()
>>> db = client.kmp
>>> db.KMP_DATA.insert_one({"seq" : 1,"data" : "ABCD"})
<pymongo.results.InsertOneResult object at 0x1058c8828>
>>> 

However I still cannot import it from python script.

Answer 1

It's a common problem that "pip" or "pip3" are not the same environment as "python" or "python3". To ensure you're installing with the same environment as you run:

python -m pip install pymongo

Or:

python3 -m pip install pymongo